Cabinet lock assembly

ABSTRACT

A cabinet lock assembly which may be utilized for a cabinet door, drawer or lid, and when for a door the lock may be used for right- or left-hand application with a back set of either of two different dimensions. The lock assembly includes a bolt guide assembly having a cylinder guide, a bolt guide or housing and a lock bolt, and a cylinder assembly which is snapped into position in the cylinder guide for proper operation and includes a keyoperated cylinder lock. The bolt guide assembly is mounted on the rear surface of the door, drawer or lid with the cylinder assembly snapped into the cylinder guide in an upright position, and a simple release and knockout tool will release the cylinder assembly from the rear end of the lock assembly. To adapt the lock assembly for the various installations, the bolt is removed from the housing, flipped over and turned end for end.

United States Patent 3141,319 7/1964 Schlage 3.222.898 12/1965 Lunsf0rd.. 3,436,939 4/1969 Sewellum.

Primary Examiner.lames A. Leppink Assistant Examiner-Albert G Craig, Jr, Auorney-Wilson and Geppert L n l. "U1 Gm .l .m t r m a 0 u (I d .k n M I. R m M a M S am ou on w.mw 0 vie W 09 .W n ee fl 33 W -S J -KP m 0. dm m n n l flg C 6 9 m D mS l AFPA ABSTRACT: A cabinet lock assembly which may be utilized for a cabinet door, drawer or lid, and when for a door the lock or left-hand application with a back set [54] CABINET LOCK ASSEMBLY ent dimensions. The lock assembly inbly having a cylinder guide, a bolt a lock bolt, and a cylinder assembly osition in the cylinder guide for proper -operated cylinder lock. The bolt nted on the rear surface of the door,

e cylinder assembly snapped into the pright position and a simple release and ease the cylinder assembly from the rear mbly. To adapt the lock assembly for the various installations, the bolt is removed from the housing, flipped over and turned end for end.

2,954,2 48 9/1960 Brickman.......

PATENTEU M29 I971 3,589,152

SHEET 1 UP 3 CABINET LOCK ASSEMBLY The present invention relates to a cabinet lock assembly and more particularly to a lock assembly that is adapted for use on a cabinet door, drawer or lid with simplified modifications in the assembly arrangement.

Presently known cabinet locks are designed and constructed for a single use and application whether for a door or drawer and the tumbler lock and bolt housing are formed as an integral unit. Thus, the lock assembly can only be used in one position or the lock cylinder will not be upright, or the bolt throw is in only one direction. At best, some presently known locks may be adapted for rightor left-hand use, or for both a door and a drawer; however, none of these lock assemblies provide a simplified lock construction which can be used for rightor left-hand use, operation on a door, or for a cabinet drawer, or for a cabinet lid withlthe differing backsets required in the numerous lock applications found today.

Among the objects of the present invention is the provision of a novel cabinet lock assembly which is adapted for use on a cabinet door, a cabinet drawer, or a cabinet lid by a simple change in the assembly arrangement. The lock assembly may be used on a cabinet door for either rightor left-hand operation and with one of two alternate back sets.

Another object of the present invention is the provision of a novel cabinet lock assembly having a bolt guide assembly housing a reciprocable lock bolt and a cylinder assembly housing a key-operated tumbler lock. The cylinder assembly is snapped into operative position in the bolt guide assembly and may be snapped into one of four positions so that the cylinder assembly is always upright in the lock installation.

A further object of the present invention is the provision of a novel cabinet lock assembly where the bolt guide assembly is secured to the interior surface of the cabinet installation and the cylinder assembly extends through an opening in the cabinet installation to expose the keyway at the exterior surface thereof.

The present invention also comprehends the provision of a novel cabinet lock assembly having a reciprocable bolt that is flipped over and turned end for end to alter the lock assembly between a door installation and a drawer or lid installation.

The present invention further comprehends the provision of a novel cabinet lock assembly where the bolt housing andthe reciprocable bolt have aligned openings through which a release and knockout tool can be inserted to release and knock the cylinder assembly out of engagement with the bolt guide assembly.

Further objects are to provide a construction of maximum simplicity, efficiency, economy and ease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby.

In the drawings:

FIG. 1 is a front elevational view of the cabinet lock assembly showing its installation in a cabinet drawer.

FIG. 2 is a side elevational view of the lock assembly of FIG. 1.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is an enlarged exploded perspective view of the components of the lock assembly.

FIG. 6 is a rear elevational view of the cylinder assembly.

FIG. 7 is an enlarged vertical cross sectional view of the lock assembly taken on the line 7-7 of FIG. 4.

FIG. 8 is a horizontal cross-sectional view taken on the line 8-8 of FIG. 7.

FIG. 9 is a front elevational view of the lock bolt showing the side opposite to that shown in FIG. 7.

FIG. 10 is a vertical cross-sectional view taken on the line 10-10 of FIG. 9.

FIG. 11 is a side elevational view showing the cylinder assembly prior to installation in the cylinder guide plate.

FIG. 12 is an exploded side elevational view of the components of the cylinder assembly.

FIG. 13 is a partial cross-sectional view taken on the line 1343 of FIG. 6.

FIG. 14 is an enlarged perspective view of the components of the cabinet lock assembly and the cylinder release and knockout tools.

FIG. 15 is a side elevational view showing the application of the release tool to the lock assembly.

FIG. 16 is a rear elevational view of the lock assembly as secured to the lid ofa cabinet.

FIG. 17 is a rear elevational view of the lock assembly mounted on a cabinet door for a left-hand door lock FIG. 18 is a view similar to FIG. 17 but for a right-hand lock.

FIG. 19 is an exploded perspective view of a combined release and knockout tool.

FIG. 20 is a side elevational view of the assembled tool of FIG. 19.

Referring more particularly to the disclosure in the drawings wherein is shown an illustrative embodiment of the present invention, FIGS. 1-4 disclose a cabinet lock assembly 10 which is shown installed in a drawer front 11 of a drawer slidable in a cabinet or enclosure 12. The lock assembly 10 includes a bolt guide assembly 13 and a cylinder assembly 14 which are detachably secured together in operative engagement with the bolt guide assembly 13 secured by suitable fastening means, such as the screws 15, to the interior surface 16 of the drawer front 11; the cylinder assembly 14 extending through the drawer front 11 and having the face or flange 17 of the cylinder assembly generally flush with the exterior surface of the drawer front.

As more clearly seen in FIG. 5, the: bolt guide assembly 13 includes a bolt guide housing 18 ofa channel shape with a rear wall 19 and parallel sidewalls 21, 21 which have forwardly positioned channels or shoulders 22, 22 and oppositely disposed semicircular recessed flanges 23, 23 extending from the sidewalls 21, 21. Each flange 23 has an opening 24 to receive one of the mounting screws 15. The rear wall 19 has a large circular opening 25 which is horizontally aligned with the flanges 23, 23, and a projection or stop 26 is positioned on the wall 19 to cooperate with a reciprocable lock bolt 27.

A cylinder guide 28 includes a generally rectangular plate 29 which is received in the channels 22, 22 to close the face of the housing 19; the plate having horizontally aligned side flanges 31, 31 adapted to be received in the recesses in the flanges 23, 23 of the housing. Each flange 31 has an opening 32 aligned with an opening 24 in the flange 23. The plate 29 is provided with an opening 33 axially aligned with the opening 25 and defined by an annular flange 34 projecting from the surface of the plate 29 opposite the housing.

The annular flange 34 has four arcuate extensions 35 separated and equally spaced by notches or slots 36; each extension being of a lesser external diameter than the external diameter of the annular flange 34 and of the same internal diameter as the opening 33. Intermediate the notches 36 on the internal surface of each extension35 is a notch defining an inclined or camming surface 37 merging into the interior surface 38 of the flange 34. Axially aligned with each inclined surface 37 is a notch or channel 39 formed in the interior surface 38 defining the opening 33 and terminating in a shoulder 41 spaced from the inclined surface 37; the surface 37 and shoulder 41 acting in a manner to be later described.

The cylinder assembly 14 for actuation of the lock bolt 27 includes a lock cylinder 42 having the enlarged face or flange 17 defining an annular shoulder 43. The cylinder 42 is cylindrical and formed towards the rear end with a pair of generally semicircular recesses 44 separated by a pair of diametrically opposed arms 45. Beyond the recesses, the cylinder is stepped at 46 and terminates at a rear end having spaced arcuate flanges 47 with inclined surfaces terminating at shoulders 48 spaced inward from the rear end. The inclined arcuate flanges are separated by channels 49 for a purpose to be later described.

The lock cylinder 42 is provided with a cylindrical passage 51 extending therethrough, shown as offset from the axis of the cylinder, and a plurality of tumbler passages 52 which are longitudinally aligned with one of the arms 45. A slot 53 is provided at the step 46 to intersect the passage 51. A rotatable plug 54 is received in the passage 51 and has an annular groove 55 aligned with the slot 53 to receive therein a plug clip 56 to retain the plug in the cylinder. The plug has tumbler passages 57 adapted to be aligned with the passages 52 in the lock cylinder and terminates at its rear end in a pair of spaced axially offset pins or projections 58 utilized to actuate the lock bolt 27.

A cylindrical sleeve 59 of an external diameter substantially equal to the diameter of the flange 17 conformably slides over the lock cylinder 42 to abut the shoulder 43 and encompasses the recesses 44 and arms 45. The pin tumblers (not shown) are located in the passages 57 and the drivers and driver springs (not shown) are located in the passages 52 with the sleeve 59 preventing removal of the springs and drivers. The sleeve 59 may be a friction fit on the cylinder 42 supplemented by the friction of the driver springs, or otherwise suitable secured thereon.

A snap washer 61 is secured onto the rear end of the lock cylinder 42 by means of the inclined flanges 47. The snap washer 61 includes a flat face 62 having an axially offset opening 63 therein receiving the inner end of the plug 54 and a generally annular flange 64 having an inclined portion 65 and a cylindrical portion. Spaced at an arc of 90 are a pair of outwardly inclined tabs 67, 67 which extend rearwardly a greater distance than the flange 64. The cylindrical portion of the flange 64 terminates in three inwardly extending arcuate flanges 68. The snap washer 61 is positioned on the rear end of the cylinder 42 with the flange 64 engaging the inclined flanges 47 and the inwardly extending flanges 68 snapped over the shoulders 48, and the inclined tabs 67,67 located in the channels 49, 49 for freedom of movement.

As shown in FIGS. 5,7,8 and 14, the lock bolt 27 is positioned for reciprocable movement between the housing 18 and the plate 29 so as to project from one end 69 or the other end 71 depending on actuation thereof. The bolt 27 is a generally rectangular member having a pair of elongated longitudinal openings 72therethrough defining a central bolt actuating portion 73. The portion 73 is recessed at both sides, as seen in FIG. 10, to provide actuation in either of two positions thereof depending on whether the bolt is utilized for door actuation or for drawer or lid actuation.

As seen in FIGS. and 7, the bolt surface 74 has a recess 75 at one side adjacent one opening 72 adapted to receive the stop 26 in the housing 18. The central portion 73 is recessed at 76 and provided with a pair of arms 77, 77, each arm extend ing from the right side opening 72, as seen in FIG. 7, toward and stopping short of the left-side opening 72 in a camming surface 78. These arms 77, 77 and recess 76 cooperate with the pins 58 on the plug 54 to reciprocate the lock bolt 27 between upper and lower positions; the upper position being shown in FIGS. 1-3 and 7.

The opposite surface 79 of the lock bolt 27, as seen in FIG. 9, cooperates with the pins 58 when the lock assembly is installed on a door 81 and the lock bolt 27 is horizontally reciprocated to engage a strike in a door frame 82 as seen in FIGS. 17 and 18. Again a recess 83 is located adjacent an opening 72 to cooperate with the stop 26 when the lock is utilized for a drawer or lid as will be later described. The central portion 73 is recessed at 84 and has three spaced arms or projections 85,86,86 with a camming surface 87 at each end thereof. The arms 86,86 are each joined to the main bolt surface by connecting portions 88,88 which define rounded areas 89 of the recess 84 to receive a pin 58 on the plug 54. As seen in FIG. 10, the recesses 76 and 84 are positioned differently on the bolt surfaces 74 and 79, respectively, in view of the different orientation of the bolt and the bolt guide assembly 13 relative to the cylinder assembly 14 as now will be more fully explained.

As clearly seen in FIGS. 5 and 7, the opening 25 and flanges 23,23 of the housing 18 and the aligned opening 33 and flanges 31,31 of the plate 29 are not centrally positioned relative to the ends 69 and 71 of the housing 18, but are located farther from the end 69 than from the end 71, thus providing two distinct back sets for the lock. Also, the word DOOR is engraved or otherwise imprinted on the housing rear surface 91, as seen in FIGS. 3 and 16-18, adjacent each end along one side thereof, and the word DRAWER is imprinted at the end 69 adjacent the opposite edge of the housing 18. Also, the lock bolt on surface 74 has the word DOOR" imprinted thereon in the central portion 73 so as to be exposed through the opening 25 in the housing 18 as seen in FIGS. 17 and 18, and arrows 92,92 are imprinted on the surface 74 so as to be aligned with one or the other of the words DOOR on the housing 18 when the end of the bolt is exposed beyond the housing. As seen in FIG. 9, a single arrow 93 is imprinted on surface 79 so as to be aligned, when exposed with the word DRAWER.

FIGS. l5, 7 and 8 disclose the lock assembly 10 located on the internal surface 16 of the drawer front 11 with the end 69 uppermost. The bolt guide assembly 13 can be secured to the drawer 11 or other installation by the cabinet manufacturer with the cylinder assembly 14 assembled thereinto later at the place of use. To assemble, the cylinder assembly 14 is oriented so that the cylinder and the keyway 94 in the plug 54 are upright and the cylinder assembly is inserted into the opening in the drawer front 11 aligned with the annular flange 34 on the plate 29 secured to the interior of the drawer.

As the cylinder assembly is inserted, the tabs 67,67 of the snap washer 61 engage two adjacent camming surfaces 37,37 to cam the tabs inwardly, while the arcuate extensions 35 enter the recesses 44 on the lock cylinder 42 under the sleeve 59; with the opposed arms 45,45 entering two opposed slots 36,36 separating the extensions 35. The tabs 67,67 are cammed inward onto the interior-surface 38 and then snap over the shoulders 41,41 into the notches 39,39 with the plug pins 58,58 entering the recess 76; while the stop 26 of housing 18 is located in the recess 83 of the bolt.

With the lock bolt 27 in retracted position, the pins 58,58 are generally horizontally aligned in the recess 76 above the arms 77,77. Insertion of the proper key (not shown) and rotation of the plug 54 will cause upward movement of the bolt, as limited by the stop 26, through cooperation of the pins 58,58 with the arms 77,77 in the recess 76 as well known in the art to the position shown in FIG. 7. When the bolt is advanced into a suitable strike, the arrow 93 is exposed above the housing 18 and points to the word drawer (see FIG. 3). Rotation of the plug in the opposite direction will retract the bolt so that the opposite end of the bolt projects from the end 71 of the housing 18.

To adapt the lock assembly 10 for use on a cabinet lid 95, as seen in FIG. 16, the assembly is installed in the same manner as previously explained, but with the end 71 of the housing 18 adjacent the edge 96 of the cabinet lid, and the bolt projects from the end 71 into a suitable strike in the cabinet or enclosure 97. If, upon assembling the lock assembly on the lid 95, the cylinder assembly 14 and keyway 94 are not upright, the cylinder assembly is removed, rotated through an arc ofa multiple of until the keyway 94, in its normal position, is upright, and reinserted into the bolt guide 13 and operatively secured thereto.

The cylinder assembly 14 is easily removed from the bolt guide assembly 13 by use of a snap release 98 and a knockout 104 shown in FIGS. 14 and 15. The snap release 98 includes a cylindrical hollow or tubular body 99 with four circumferentially spaced longitudinally extending arms or tabs 101 at one end thereof. Each arm 101 is shouldered at 102 to provide a forward end 103 of a length substantially equal to the length of a notch 39 in the annular flange 34. The knockout 104 is a generally U-shaped or horseshoe-shaped member having parallel arms 105.

To release the cylinderassembly 14, access is obtained to the rear of the lock assembly so that the snap release 98 can be inserted into the opening 25 in the housing 18. The snap release 98 is oriented so that two adjacent arms 101,101 extend through each of the elongated openings 72 in the lock bolt 27 with the ends 103 extending into the notches 39 in the cylinder guide 28. As the forward ends 103 enter the notches 39 and move toward the shoulders 41, the ends cam the tabs 67,67 inward until the tabs are released from the shoulders 41. Movement ofthe release 98 terminates when the ends 103 en gage the shoulders 41. Then the knockout 104 is inserted in the opening 25 so that the arms 105 extend through the elongated openings 72 in the lock bolt and the opening 33 in the guide 28 and engage the face 62 of the snap washer 61. Inward movement of the knockout 104 will release the cylinder assembly 14 from the guide and project it sufficiently from the cabinet drawer, lid or door so as to be manually grasped and completely removed from the installation.

FIGS. 17 and 18 disclose the installation of the lock assembly on a cabinet door 81 so the bolt 27 when extended will engage a suitable strike in the cabinet or enclosure 82. As shown in FIGS. 17 and 18, the lock assembly can be installed for either rightor left-hand operation and the lock assembly can be positioned for rightor left-hand operation with either of the two back sets depending on whether the end 69 or 71 is adjacent the edge of the door. As an example, the two back sets can be three-fourth inch and seveneighth inch, although these two dimensions are not meant to be limiting. The throw of the lock bolt 27 to project from the housing 18 is the same distance in either direction.

To adapt the lock assembly 10 for operation on a door 81, the housing 18 is removed from the cylinder guide 28 and the bolt 28 is flipped over and turned end for end and the housing replaced onto the guide 28 so that the stop 26 enters the recess 75 on the bolt surface 74, and the pins 58 enter the recess 84 in the bolt surface 79 and cooperate with the projections 85,86,86 in the recess 84. The cylinder assembly 14 must be rotated through an arc of 90 in either direction from the position for a drawer or lid so that the keyway 94 is normally upright, and the. housing 18 and guide 28 are oriented for a horizontal path of travel of the lock bolt 27.

The pins 50 cooperate with the projections 85,86,86, upon rotation of the plug 54, in a known manner, to reciprocate the bolt 27 in either direction. During plug rotation, the pins 58,58 move around the lower cam surfaces 87 of the projections in arcuate paths and into the recess 83 between the projections to engage the projections and cause lateral movement of the lock bolt. One of the two arrows 92 will be exposed opposite the word DOOR" at one end of the housing 18.

FIGS. 19 and 20 disclose an alternate form of release and knockout where the two elements are combined in an assembly 106. in this assembly, an elongated tubular snap release 107 has the arms 108 separated by oppositely disposed deep notches 109,109 and oppositely disposed shallower notches 111,111; the depth of the shallower notches 111,111 being substantially equal to the length of the notches 39. Also, the tubular body 107 includes a pair of oppositely disposed parallel elongated slots 112,112, longitudinally aligned with the shallower notches 111,111. The knockout 113 for this assembly includes a pair of parallel legs 114,114, each leg 114 having an intermediate outwardly offset portion 115 of a length less than and fitting in one of the opposed slots 112. The slots 112,112 and the offsets 115,115 of the knockout 113 allows for limited reciprocable movement of the knockout within the release 107 between advanced and retracted positions.

In the retracted position, the legs 114,114 of the knockout 113 are positioned within the tubular portion of the release 107, while in advanced position, the ends of the legs 114,114 project beyond the arms 108 of the release. The release and knockout assembly 106 functions in the same manner to eject the cylinder assembly 14 from operative connection in the bolt guide assembly 13 except that the release and knockout are combined. The assembly 106 is inserted in the bolt guide assembly 13, with the knockout 113 retracted, to release the inclined tabs 67,67 from the shoulders 41,41, and then the knockout 113 is advanced relative to the release 107 to eject the cylinder assembly 14.

This lock assembly, although shown for a pin tumbler lock, is adaptable to other tumbler types. This lock has maximum flexibility as adaptable for rightor left'hand door installation or drawer or lid installations by a simple reversal of the lock bolt. The bolts design prohibits assembly in more than the two usable ways. The stop in the bolt housing controls the bolts throw in both directions and locates the engagement position required for entry of the cylinder assembly.

The bolt guide assembly can be installed by the furniture maker after drilling the clearance hole for the cylinder assembly and the pilot holes for the bolt guide assembly mounting screws 15. The bolt guide assembly is arranged for door, drawer or lid application and is secured to the furniture. Then the furniture piece may be completed and finished with the bolt guide assembly in place and shipment may be made or the furniture may be stored with this part of the lock in place. At a later date when key and finish requirements are known, the cylinder assemblies may be made, shipped to the users destination, and a custodian can snap the cylinder assemblies in place, thus completing the assembly of the lock. The only requirements for the addition of the cylinder assembly are that the key is pulled and the cylinder is in the upright position.

As above noted, the cylinder assembly can be quickly and easily removed by use of either embodiment of the release and knockout tools. Advantages of this removal feature include the following:

1. One can quickly switch cylinder assemblies for security reasons.

2. Should the furniture be moved from room to room, the keying can be kept the same by switching cylinder assem blies.

3. Should the lock be abused or broken, the cylinder assembly can be replaced.

4. Should the furniture be refinished, the cylinder assemblies can be removed.

5. Finish of the cylinder can be changed by switching or replacing.

6. A qualified person can re-key the cylinder after it has been removed.

7. Removal of the cylinder assembly cannot be accomplished unless the unit is unlocked by an authorized person.

Having thus disclosed our invention, We claim:

1. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, a pair of spaced axially offset pins on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end ofsaid cylinder to removably secure the cylinder in the cylinder guide plate, said lock bolt having a recess on each face including at least two pairs of transverse arms therein, each arm having a camming surface of at least one end thereof spaced from the edge of said recess so that either recess may accommodate said spaced pins on said plug for actuation of the bolt, said lock bolt having a pair of parallel elongated openings therethrough paralleling and intersecting the longitudinal edges of said recesses.

2. A cabinet lock assembly as set forth in claim 1, including a stop projecting inwardly in said housing, and said lock bolt having a pair of oppositely disposed stop recesses, one on each face of said bolt to receive said stop, so that said lock bolt may be flipped over and turned end for end relative to said housing to properly orient said bolt and housing for either door, drawer or lid installation.

3. A cabinet lock assembly as set forth in claim 1, in which said housing and said cylinder guide plate each has a generally central opening therein, said openings being axially aligned and generally aligned with said elongated slots in said lock bolt.

4. A cabinet lock assembly as set forth in claim 1, in which said means onsaid cylinder includes a snap washer secured onto the inner end of said cylinder, said washer having an opening aligned with and receiving the inner end of said rotatable plug, and a pair of circumferentially spaced inclined resilient tabs on said washer inclined outwardly and extending forwardly from said washer.

5. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, a pair of spaced axially offset pins on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end of said cylinder to removably secure the cylinder in the cylinder guide plate, said lock bolt having a recess on said face including at least two pairs of transverse arms therein, each arm having a camming surface and at least one end thereof spaced from the edge of the recess so that either recess may accommodate the spaced pins on said plug for actuation of the bolt, one recess having a pair of spaced laterally extending arms spaced from end walls thereof, and the other recess having three spaced arms with camming surfaces at each end of each arm, said end arms being joined to end walls with curved recesses between said arm and said wall and defined by a central joining portion, one of said recesses being especially adapted for horizontal actuation of the bolt and the other recess being especially adapted for vertical action of the bolt.

6. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, means on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end of said cylinder to removably secure the cylinder in the cylinder guide plate, including a snap washer secured onto the inner end of said cylinder, said washer having an opening aligned with and receiving the inner end of said rotatable plug, and a pair of circumferentially spaced inclined resilient tabs on said washer inclined outwardly and extending forwardly from said washer, said cylinder guide plate having a generally central opening thcrethrough, an annular flange defining said opening and extending toward said cylinder assembly, said flange having a plurality of circumferentially equally spaced arcuate projections extending thercbeyond, a plurality of notches formed on the interior surface of said arcuate projections each having an inwardly inclined surface, adjacent notches being spaced apart by an are equal to the arc separating said inclined tabs, and a plurality of notches formed in said annular flange, each last mentioned notch being axially aligned with and forming a retaining shoulder spaced from a first mentioned notch.

7. A cabinet lock assembly as set forth in claim 6, in which said first mentioned notches receive and cam said inclined resilient tabs inwardly and the shoulders on said second notches cooperating with the free ends of said tabs to retain said cylinder assembly when said tabs snap into said second notches.

8. A cabinet lock assembly as set forth in claim 7, in which said aligned pairs of notches are circumferentially spaced in such a manner that said cylinder assembly can be secured to said cylinder guide plate at arcuate increments of so that said lock cylinder and plug are always upright in a given lock installation.

9. A cabinet lock assembly as set forth in claim 6, in which said cylinder assembly includes arcuate recesses spaced forwardly of said snap washer to receive the arcuate projections on said cylinder guide plate when the cylinder assembly and bolt guide assembly are connected together.

10. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a rotatable plug in said cylinder operatively connected to said lock bolt for reciprocation thereof, and a snap washer secured onto the inner end of said cylinder, a pair of circumferentially spaced inclined resilient tabs on said washer, and an annular flange on said cylinder guide plate defining a central opening therein, said flange having a plurality of circumferentially spaced notches formed on the interior surface thereof and forming retaining shoulders cooperating with said inclined tabs to releasably retain the cylinder in the cylinder guide plate. 

1. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, a pair of spaced axially offset pins on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end of said cylinder to removably secure the cylinder in the cylinder guide plate, said lock bolt having a recess on each face including at least two pairs of transverse arms therein, each arm having a camming surface of at least one end thereof spaced from the edge of said recess so that either recess may accommodate said spaced pins on said plug for actuation of the bolt, said lock bolt having a pair of parallel elongated openings therethrough paralleling and intersecting the longitudinal edges of said recesses.
 2. A cabinet lock assembly as set forth in claim 1, including a stop projecting inwardly in said housing, and said lock bolt having a pair of oppositely disposed stop recesses, one on each face of said bolt to receive said stop, so that said lock bolt may be flipped over and turned end for end relative to said housing to properly orient said bolt and housing for either door, drawer or lid installation.
 3. A cabinet lock assembly as set forth in claim 1, in which said housing and said cylinder guide plate each has a generally central opening therein, said openings being axially aligned and generally aligned with said elongated slots in said lock bolt.
 4. A cabinet lock assembly as set forth in claim 1, in which said means on said cylinder includes a snap washer secured onto the inner end of said cylinder, said washer having an opening aligned with and receiving the inner end of said rotatable plug, and a pair of circumferentially spaced inclined resilient tabs on said washer inclined outwardly and extending forwardly from said washer.
 5. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, a pair of spaced axially offset pins on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end of said cylinder to removably secure the cylinder in the cylinder guide plate, said lock bolt having a recess on said face including at least two pairs of transverse arms therein, each arm having a camming surface and at least one end thereof spaced from the edge of the recess so that either recess may accommodate the spaced pins on said plug for actuation of the bolt, one recess having a pair of spaced laterally extending arms spaced from end walls thereof, and the other recess having three spaced arMs with camming surfaces at each end of each arm, said end arms being joined to end walls with curved recesses between said arm and said wall and defined by a central joining portion, one of said recesses being especially adapted for horizontal actuation of the bolt and the other recess being especially adapted for vertical action of the bolt.
 6. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a plug rotatably mounted in said cylinder, means on said plug cooperating with said lock bolt so that rotation of said plug causes reciprocation of said bolt, and means on the inner end of said cylinder to removably secure the cylinder in the cylinder guide plate, including a snap washer secured onto the inner end of said cylinder, said washer having an opening aligned with and receiving the inner end of said rotatable plug, and a pair of circumferentially spaced inclined resilient tabs on said washer inclined outwardly and extending forwardly from said washer, said cylinder guide plate having a generally central opening therethrough, an annular flange defining said opening and extending toward said cylinder assembly, said flange having a plurality of circumferentially equally spaced arcuate projections extending therebeyond, a plurality of notches formed on the interior surface of said arcuate projections each having an inwardly inclined surface, adjacent notches being spaced apart by an arc equal to the arc separating said inclined tabs, and a plurality of notches formed in said annular flange, each last mentioned notch being axially aligned with and forming a retaining shoulder spaced from a first mentioned notch.
 7. A cabinet lock assembly as set forth in claim 6, in which said first mentioned notches receive and cam said inclined resilient tabs inwardly and the shoulders on said second notches cooperating with the free ends of said tabs to retain said cylinder assembly when said tabs snap into said second notches.
 8. A cabinet lock assembly as set forth in claim 7, in which said aligned pairs of notches are circumferentially spaced in such a manner that said cylinder assembly can be secured to said cylinder guide plate at arcuate increments of 90* so that said lock cylinder and plug are always upright in a given lock installation.
 9. A cabinet lock assembly as set forth in claim 6, in which said cylinder assembly includes arcuate recesses spaced forwardly of said snap washer to receive the arcuate projections on said cylinder guide plate when the cylinder assembly and bolt guide assembly are connected together.
 10. A cabinet lock assembly adapted for use on a door, drawer or lid, comprising a bolt guide assembly including a housing open at opposite ends, a reciprocable lock bolt in said housing, and a cylinder guide plate conformably received in and forming one side of said housing, and a cylinder assembly removably secured in said cylinder guide plate, said cylinder assembly including a cylinder, a rotatable plug in said cylinder operatively connected to said lock bolt for reciprocation thereof, and a snap washer secured onto the inner end of said cylinder, a pair of circumferentially spaced inclined resilient tabs on said washer, and an annular flange on said cylinder guide plate defining a central opening therein, said flange having a plurality of circumferentially spaced notches formed on the interior surface thereof and forming retaining shoulders cooperating with said inclined tabs to releasably retain the cylinder in the cylinder guide plate. 